<?
class SearchDomain
{
 var $domain="";
 function SetDomain($udomain)
 {
 $this->domain = $udomain;
 }
 //
 // 获取whois并分析域名状态
 // ok 未被注册
 // 非空值 过期时间
 // 空值 未知
 //
 function GetInfo()
 {
 /*
 $dinfo = trim($this->GetWhois());
 if($dinfo=="") return "";
 if(eregi("no match",$dinfo)) return "ok";
 //return $rs;
 */
 $wl = "";
 $w_server = $this->GetServer();
 if($w_server=="") return "";
 $fp = fsockopen($w_server, 43, $errno, $errstr, 30);
 if(!$fp)
 {
 echo $errstr;
 return "";
 }
 $out = $this->domain."\r\n";
 $out .= "Connection: Close\r\n\r\n";
 fputs($fp, $out);
 while (!feof($fp))
 {
 $wl = fgets($fp, 255);
 if(eregi("no match",$wl))
 {
 fclose($fp);
 return "ok";
 }
 if(eregi("Expiration Date",$wl))
 {
 $lines = split(":",$wl);
 $t = trim($lines[1]);
 $ts = split(" ",$t);
 $t = $ts[0];
 if(ereg("[^0-9-]",$t))
 {
 $ts = split("-",$t);
 $t = $ts[2]."-".$this->MonthToNum($ts[1])."-".$ts[0];
 }
 fclose($fp);
 return $t;
 }
 }
 fclose($fp);
 return "";
 }
 //
 //获得域名的整个whois信息
 //
 function GetWhois()
 {
 $wh = "";
 $w_server = $this->GetServer();
 if($w_server=="") return "";
 $fp = fsockopen($w_server, 43, $errno, $errstr, 30);
 if(!$fp)
 {
 echo $errstr;
 return "";
 }
 $out = $this->domain."\r\n";
 $out .= "Connection: Close\r\n\r\n";
 fputs($fp, $out);
 while (!feof($fp))
 {
 $wh .= nl2br(fgets($fp, 255));
 }
 fclose($fp);
 return $wh;
 }
 //
 //输出当前域名的状态信息
 //
 function PrintSta()
 {
 $rs = $this->GetInfo();
 if($rs=="ok") echo $this->domain." 未注册！<br/>\r\n";
 else if($rs=="") echo "无法查询 ".$this->domain." 状态！<br/>\r\n";
 else echo $this->domain." 已注册，到期时间：$rs<br/>\r\n";
 }
 //
 //获得 whois 查询服务器
 //
 function GetServer()
 {
 $udomain=substr($this->domain,-3);
 switch($udomain)
 {
 case "com":
 $w_server="whois.internic.net";
 break;
 case "net":
 $w_server="whois.internic.net";
 break;
 case "org":
 $w_server="whois.pir.org";
 break;
 case "nfo":
 $w_server="whois.afilias.info";
 break;
 case "biz":
 $w_server="whois.biz";
 break;
 case ".cc":
 $w_server="whois.nic.cc";
 break;
 case "edu":
 $w_server="whois.educause.net";
 break;
 case "gov":
 $w_server="whois.nic.gov";
 break;
 case ".cn":
 $w_server="whois.cnnic.net.cn";
 break;
 default:
 $w_server="";
 }
 return $w_server;
 }
 //
 //英语的月份转为数字
 //
 function MonthToNum($m)
 {
 $m = strtolower($m);
 for($i=1;$i<=12;$i++)
 {
 $tt = mktime(0,0,0,$i+1,0,2005);
 if($m==strtolower(strftime("%b",$tt)))
 {
 if($i>9) return $i-1;
 else return "0".$i-1;
 }
 }
 }
}

$sd = new SearchDomain();
$sd->SetDomain("job-sky.com");

//查询域名是否被注册，等价于 $sd->PrintSta(); 
$rs = $sd->GetInfo();
if($rs=="ok") echo $sd->domain." 未注册！<br/>\r\n";
else if($rs=="") echo "无法查询 ".$sd->domain." 状态！<br/>\r\n";
else echo $sd->domain." 已注册，到期时间：$rs<br/>\r\n";

//获得域名的详细whois信息
//echo $sd->GetWhois();
?> 
